After his birthday weekend, Blake and Ryan are stronger than ever!

Blake Lively and Ryan Reynolds are getting serious! A source tells HollywoodLife.com that the upcoming Holiday season has brought the sexy A-Listers even closer!

The pair have been photographed leaving Ryan’s Boston hotel in the morning two days in a row — first on Oct. 22 and then on Oct. 23.

Our source explains that it’s perfect timing for these two to cement their relationship. “They are in a perfect scenario with each other. They were hanging out on Ryan’s birthday, Halloween is right around the corner and the Thanksgiving and Christmas holidays are soon. The time of year is really making every hangout that much more special. ”

“They are in the honeymoon phase,” the source describes.

On Oct. 20, Ryan even took Blake out to dinner with his BFF Sandra Bullock.

But don’t be mad at Ryan — he’s not rubbing his younger girlfriend in Sandra’s face! Even though there was speculation that Ryan and Sandra were an item, the insider says they were always “just friends.”